Rheological properties and microstructure analyses of soyprotein fibers

Abstract

The dynamic rheological properties of the hydrated soyprotein dispersion and dope were studied to investigate the riscoelastic properties of them. It was found that intermolecular reaction of protein is developed with the increase of protein concentration in both cases of dispersion and dope. Also it was found that with addition of alkaline solution to dispersion, the dope shows the characteristics of very lightly cross-linked high molecular weight polymer in contrast to the dispersion which shows them of an amorphorous polymer. The effect of chemical modification for dispersion on dynamic rheological properties were investigated. With the SEM the microstructures of dispersion and dope were observed and discussed. With SEM and TTPA(Texture Profile Analysis) the chemical bonds influencing the form and maintenance of soyprotein fiber structure were discussed.